--- a/layout/style/nsCSSProps.h
+++ b/layout/style/nsCSSProps.h
@@ -221,16 +221,18 @@ static_assert((CSS_PROPERTY_PARSE_PROPER
 //   pref, this property is usable everywhere.
 // * If any of the flags is set, this property is always enabled in the
 //   specific contexts regardless of the value of the pref. If there is
 //   no pref for this property at all in this case, it is an internal-
 //   only property, which cannot be used anywhere else, and should be
 //   wrapped in "#ifndef CSS_PROP_LIST_EXCLUDE_INTERNAL".
 // Note that, these flags have no effect on the use of aliases of this
 // property.
+// Furthermore, for the purposes of animation (including triggering
+// transitions) these flags are ignored.
 #define CSS_PROPERTY_ENABLED_MASK                 (3<<22)
 #define CSS_PROPERTY_ENABLED_IN_UA_SHEETS         (1<<22)
 #define CSS_PROPERTY_ENABLED_IN_CHROME            (1<<23)
 #define CSS_PROPERTY_ENABLED_IN_UA_SHEETS_AND_CHROME \
   (CSS_PROPERTY_ENABLED_IN_UA_SHEETS | CSS_PROPERTY_ENABLED_IN_CHROME)
 
 // This property's unitless values are pixels.
 #define CSS_PROPERTY_NUMBERS_ARE_PIXELS           (1<<24)

--- a/layout/style/nsTransitionManager.cpp
+++ b/layout/style/nsTransitionManager.cpp
@@ -128,34 +128,24 @@ CSSTransition::QueueEvents()
     return;
   }
 
   dom::Element* owningElement;
   CSSPseudoElementType owningPseudoType;
   mOwningElement.GetElement(owningElement, owningPseudoType);
   MOZ_ASSERT(owningElement, "Owning element should be set");
 
-  // Do not queue any event for disabled properties. This could happen
-  // if the property has a default value which derives value from other
-  // property, e.g. color.
-  nsCSSProperty property = TransitionProperty();
-  if (!nsCSSProps::IsEnabled(property, nsCSSProps::eEnabledForAllContent) &&
-      (!nsContentUtils::IsSystemPrincipal(owningElement->NodePrincipal()) ||
-       !nsCSSProps::IsEnabled(property, nsCSSProps::eEnabledInChrome))) {
-    return;
-  }
-
   nsPresContext* presContext = mOwningElement.GetRenderedPresContext();
   if (!presContext) {
     return;
   }
 
   nsTransitionManager* manager = presContext->TransitionManager();
   manager->QueueEvent(TransitionEventInfo(owningElement, owningPseudoType,
-                                          property,
+                                          TransitionProperty(),
                                           mEffect->GetComputedTiming()
                                             .mDuration,
                                           AnimationTimeToTimeStamp(EffectEnd()),
                                           this));
 }
 
 void
 CSSTransition::Tick()
@@ -532,16 +522,23 @@ nsTransitionManager::ConsiderStartingTra
   nsCSSPropertySet* aWhichStarted)
 {
   // IsShorthand itself will assert if aProperty is not a property.
   MOZ_ASSERT(!nsCSSProps::IsShorthand(aProperty),
              "property out of range");
   NS_ASSERTION(!aElementTransitions ||
                aElementTransitions->mElement == aElement, "Element mismatch");
 
+  // Ignore disabled properties. We can arrive here if the transition-property
+  // is 'all' and the disabled property has a default value which derives value
+  // from another property, e.g. color.
+  if (!nsCSSProps::IsEnabled(aProperty, nsCSSProps::eEnabledForAllContent)) {
+    return;
+  }
+
   if (aWhichStarted->HasProperty(aProperty)) {
     // A later item in transition-property already started a
     // transition for this property, so we ignore this one.
     // See comment above and
     // http://lists.w3.org/Archives/Public/www-style/2009Aug/0109.html .
     return;
   }
 

--- a/layout/style/test/mochitest.ini
+++ b/layout/style/test/mochitest.ini
@@ -266,16 +266,17 @@ skip-if = (toolkit == 'gonk' && debug) |
 [test_transitions.html]
 skip-if = (android_version == '18' && debug) # bug 1159532
 [test_transitions_bug537151.html]
 [test_transitions_dynamic_changes.html]
 [test_transitions_per_property.html]
 skip-if = buildapp == 'b2g' || toolkit == 'android' #bug 775227 # b2g(times out, needs more time + various failures) b2g-debug(times out, needs more time + various failures) b2g-desktop(times out, needs more time + various failures)
 [test_transitions_step_functions.html]
 [test_transitions_with_displaynone.html]
+[test_transitions_with_disabled_properties.html]
 [test_unclosed_parentheses.html]
 [test_unicode_range_loading.html]
 support-files = ../../reftests/fonts/markA.woff ../../reftests/fonts/markB.woff ../../reftests/fonts/markC.woff ../../reftests/fonts/markD.woff
 [test_units_angle.html]
 [test_units_frequency.html]
 [test_units_length.html]
 [test_units_time.html]
 [test_unprefixing_service.html]

new file mode 100644
--- /dev/null
+++ b/layout/style/test/test_transitions_with_disabled_properties.html
@@ -0,0 +1,45 @@
+<!doctype html>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1265611
+-->
+<head>
+  <meta charset=utf-8>
+  <title>Test for bug 1265611</title>
+  <script type="application/javascript"
+    src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <style>
+  #display {
+    transition: all 0.01s;
+  }
+  </style>
+</head>
+<body>
+<a target="_blank"
+  href="https://bugzilla.mozilla.org/show_bug.cgi?id=1265611">Mozilla Bug
+  1265611</a>
+
+<div id="display"></div>
+<pre id="test">
+<script>
+SimpleTest.waitForExplicitFinish();
+
+SpecialPowers.pushPrefEnv({'set': [['layout.css.prefixes.webkit', false],
+                                   ['dom.animations-api.core.enabled', true]] },
+  () => {
+    var display = document.getElementById('display');
+    display.style.color = 'green';
+
+    var transitionedProperties =
+      display.getAnimations().map(transition => transition.transitionProperty);
+
+    ok(!transitionedProperties.includes('-webkit-text-fill-color'),
+       'We should not fire transitions for properties disabled by prefs');
+    SimpleTest.finish();
+  }
+);
+</script>
+</pre>
+</body>
+</html>